n. & v.
n. 1 a long bracket or beam etc. projecting from a wall to support a balcony etc. 2 a beam or girder fixed at only one end.
v.intr. 1 project as a cantilever. 2 be supported by cantilevers. cantilever bridge a bridge made of cantilevers projecting from the piers and connected by girders.
[ 17th c.: orig. unkn. ]